Please solve this the exercises

In the 1970s and 1980s, PepsiCo, maker of Pepsi, began airing television commercials in which it claimed more cola drinkers preferred Pepsi over Coca-Cola in a blind taste test. The Coca-Cola Company, maker of Coca-Cola, was the market leader in soda sales. After the television ads began ainng, Pepsi sales increased and began rivaling Coca-Cola sales. Assume the claim is that more than 50% of cola drinkers preferred Pepsi over Coca-Cola. You work for an independent market research firm and are asked to test this claim. B EXERCISES 1. How Would You Do It? {a) When PepsiCo performed this challenge, PepsiCo representatives went to shopping malls to obtain their sample. Do you think this type of sampling is representative of the population? Explain. {b) What sampling technique would you use to select the sample for your study? {c) Identify possible flaws or biases in your study. 2. Testing a Proportion In your study, 2580 out of 560 cola drinkers prefer Pepsi over Coca-Cola. Using these results, test the claim that more than 50% of cola drinkers prefer Pepsi over Coca-Cola. Use & = 0.05. Interpret your decision in the context of the original claim. Does the decision support PepsiCo's claim? 3. Labeling Influence The Baylor College of Medicine decided to replicate this taste test by monitoring brain activity while conducting the test on participants. They also wanted to see if brand labeling would affect the results. When participants were shown which cola they were sampling, Coca-Cola was preferred by 75% of the participants. What conclusions can you draw from this study? 4. Your Conclusions {a) Why do you think PepsiCo used a blind taste test? {b) Do you think brand image or taste has more influence on consumer preferences for cola? {c) What other factors may influence consumer preferences besides taste and branding